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US 10,094,570 B2Granted
Injector apparatus and reheat combustor
AssigneeGeneral Electric Company
InventorsLewis Berkley Davis, Jr., Gregory Thomas Foster, Kaitlin Marie Graham, Krishnakumar Venkataraman, Stanley Kevin Widener
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Abstract
Aspects of the present disclosure provide an apparatus including: an injector in fluid communication with an aft section of a reheat combustor in a power generation system, the aft section being positioned downstream of a combustion reaction zone in the reheat combustor, and positioned upstream of a turbine stage of the power generation system, wherein the turbine stage includes a turbine nozzle and a turbine blade row; and a conduit in fluid communication with the injector, wherein the conduit delivers at least one of a fuel from a fuel supply line and a carrier gas to the injector.
Claims8
An apparatus comprising:
- a turbine nozzle positioned downstream of a reheat combustor, wherein the turbine nozzle defines a throat separating an aft portion of the reheat combustor from a subsequent turbine stage of a power generation system;
- at least one nozzle injector embedded within a surface of the turbine nozzle and oriented substantially in opposition to a direction of a fluid flow from the reheat combustor, and positioned downstream from another fuel injector in fluid communication with the reheat combustor, wherein the at least one nozzle injector is in fluid communication with a single reaction zone within the reheat combustor;
- a conduit in fluid communication with the at least one nozzle injector, wherein the conduit delivers at least one of a fuel and a carrier gas to the at least one nozzle injector;
- a valve between a fuel supply line to the reheat combustor and the conduit for controlling an amount of the fuel provided from the fuel supply line to the at least one nozzle injector;
- a controller operatively connected to the valve;
- a temperature sensor in communication with the controller for measuring an inlet temperature of the reheat combustor;
- and
- an emissions sensor in communication with the controller for measuring an emissions output of the reheat combustor,
- wherein the controller adjusts a position of the valve to increase an amount of fuel in the conduit in response to the inlet temperature exceeding a temperature tolerance, or the emissions output of the reheat combustor exceeding an emissions tolerance.
6 more elements
A reheat combustor comprising:
- a reaction chamber positioned downstream of a mixing duct and upstream of a turbine nozzle to a subsequent turbine stage of a power generation system, wherein the reaction chamber includes a fore section and an aft section, and wherein an air and a first portion of a fuel delivered from the mixing duct combust in the fore section of the reaction chamber;
- at least one nozzle injector positioned on the turbine nozzle to the subsequent turbine stage and oriented substantially in opposition to a direction of a fluid flow from the reaction chamber, and positioned downstream from another fuel injector in fluid communication with the reaction chamber, wherein the at least one nozzle injector delivers a carrier gas and a second portion of the fuel to the aft section of the reaction chamber and wherein the turbine nozzle to the subsequent turbine stage defines a throat separating the aft section of the reaction chamber from the subsequent turbine stage of the power generation system, and wherein the at least one nozzle injector is in fluid communication with a single reaction zone within the reaction chamber;
- and
- a conduit in fluid communication with the at least one nozzle injector and a fuel supply line, wherein the fuel supply line is in fluid communication with the mixing duct, and wherein the conduit delivers the carrier gas and the second portion of the fuel to the at least one nozzle injector;
- a valve between the fuel supply line and the conduit for controlling an amount of the second portion of the fuel provided from the fuel supply line to the at least one nozzle injector;
- a controller operatively connected to the valve;
- a temperature sensor in communication with the controller for measuring an inlet temperature of the reheat combustor;
- and an emissions sensor in communication with the controller for measuring an emissions output of the reheat combustor, wherein the controller adjusts a position of the valve to increase an amount of fuel in the conduit in response to the inlet temperature exceeding a temperature tolerance, or the emissions output of the reheat combustor exceeding an emissions tolerance.
5 more elements
Dependencies are inferred from the claim text.